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Origin and history of convolution

convolution(n.)

1540s, "state of being rolled upon itself; a turning, winding, fold, or gyration," noun of state from Latin convolutus, past participle of convolvere "to roll together," from assimilated form of com "with, together" (see con-) + volvere "to roll" (from PIE root *wel- (3) "to turn, revolve"). Meaning "act of rolling or winding together" is from 1590s. Related: Convolutions.

also from 1540s

Entries linking to convolution

convoluted(adj.)

1752, past-participle adjective from verb convolute (1690s), from Latin convolutus, past participle of convolvere "to roll together," from assimilated form of com "with, together" (see con-) + volvere "to roll," from PIE root *wel- (3) "to turn, revolve." Or perhaps a back-formation from convolution. French has convoluté (18c.), in form a past-participle adjective, but without the verb.

con-

word-forming element meaning "together, with," sometimes merely intensive; it is the form of com- used in Latin before consonants except -b-, -p-, -l-, -m-, or -r-. In native English formations (such as costar), co- tends to be used where Latin would use con-.

*wel-(3)

Proto-Indo-European root meaning "to turn, revolve," with derivatives referring to curved, enclosing objects.

It might form all or part of: archivolt; circumvolve; convoluted; convolution; devolve; elytra; evolution; evolve; Helicon; helicopter; helix; helminth; lorimer; ileus; involve; revolt; revolution; revolve; valve; vault (v.1) "jump or leap over;" vault (n.1) "arched roof or ceiling;" volte-face; voluble; volume; voluminous; volute; volvox; volvulus; vulva; wale; walk; wallet; wallow; waltz; well (v.) "to spring, rise, gush;" welter; whelk; willow.

It might also be the source of: Sanskrit valate "turns round," ulvam "womb, vulva;" Lithuanian valtis "twine, net," vilnis "wave," apvalus "round;" Old Church Slavonic valiti "roll, welter," vlŭna "wave;" Greek eluein "to roll round, wind, enwrap," eilein "twist, turn, squeeze; revolve, rotate," helix "spiral object;" Latin volvere "to turn, twist;" Gothic walwjan "to roll;" Old English wealwian "roll," weoloc "whelk, spiral-shelled mollusk;" Old High German walzan "to roll, waltz;" Old Irish fulumain "rolling;" Welsh olwyn "wheel."

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    vortex
    1650s, "whirlpool, eddying mass," from Latin vortex, variant of vertex "an eddy of water, wind, or flame; whirlpool; whirlwind," from stem of vertere "to turn" (from PIE root *wer- (2) "to turn, bend"). Plural form is vortices. Became prominent in 17c. theories of astrophysics (b
    structure
    mid-15c.; the sense might be "building materials" or "action or process of building or construction," either way it is obsolete. From 1610s as "that which is built, an edifice," especially if large or imposing. It is from Latin structura "a fitting together, adjustment; a buildin
    militia
    1580s, "system of military discipline," from Latin militia "military service, warfare," from miles "soldier" (see military (adj.)). The sense of "citizen army" (as distinct from professional soldiers) is first recorded 1690s, perhaps from a sense in French cognate milice. Histori
    stock
    Middle English stok, from Old English stocc "stump, wooden post, stake; trunk of a living tree; log," also "pillory" (usually plural, stocks), from Proto-Germanic *stauk- "tree trunk" (source also of Old Norse stokkr "block of wood, trunk of a tree," Old Saxon, Old Frisian stok,
    bull
    "male of a bovine animal," c. 1200, bule, from Old Norse boli "bull, male of the domestic bovine," perhaps also from an Old English *bula, both from Proto-Germanic *bullon- (source also of Middle Dutch bulle, Dutch bul, German Bulle), perhaps from a Germanic verbal stem meaning "
    memoir
    early 15c., "written record," from Anglo-French memorie "note, memorandum, something written to be kept in mind" (early 15c., Old French memoire), from Latin memoria (from PIE root *(s)mer- (1) "to remember"). The more specific sense of "a notice or essay relating to something wi
    comprise
    early 15c., "to include," from Old French compris, past participle of comprendre "to contain, comprise" (12c.), from Latin comprehendere "to take together, to unite; include; seize; to comprehend, perceive" (to seize or take in the mind), from com "with, together," here probably
    spell
    early 14c., spellen, "read letter by letter, write or say the letters of;" c. 1400, "form words by means of letters," said in most etymology sources to be from Anglo-French espeller, Old French espelir "to mean, signify; explain, interpret," also "spell out letters, pronounce, re
    invest
    late 14c., "to clothe in the official robes of an office," from Latin investire "to clothe in, cover, surround," from in "in, into" (from PIE root *en "in") + vestire "to dress, clothe," from PIE *wes- (2) "to clothe," extended form of root *eu- "to dress." The meaning "use money
    rack
    c. 1300, "grating or open frame with bars or pegs upon which things are hung or placed," especially for kitchen use, possibly from Middle Dutch rec "framework," literally "something stretched out, related to recken (modern rekken) "stretch out," cognate with Old English reccan "t

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